Answer all questions in each category. Any gaps will become obvious.

If the grid went down right now, pause.
Look around.
What do you actually have? Answer all questions in each section.
Assume you have a smartphone. Yes, your phone has a flashlight.
Now ask yourself: How long will that phone last without electricity?
Once the battery dies, do you have another source of light?
Can you move safely once it is dark?
Can you read?
Can you cook?
Can you use the bathroom without fumbling?